📚 Fix documentation accuracy and repository references

- Clarify that gem supports Ruby 2.7+ through multiple implementations
- Document three modes: safe (default), native C extension, Ruby fallback
- Switch from Code Climate to qlty badges and links
- Fix incorrect GitHub repository references (active_record-framing → thaw)
- Correct typos in installation section
- Add comprehensive warnings about dangers of all implementations
- Emphasize Object#dup as the strongly recommended alternative

Author: voltechs

README.md

@@ -1,8 +1,8 @@
-[![Version      ](https://img.shields.io/gem/v/thaw.svg)](https://rubygems.org/gems/thaw)
-[![Build Status ](https://travis-ci.org/TwilightCoders/thaw.svg)](https://travis-ci.org/TwilightCoders/thaw)
-[![Dependencies  ](https://img.shields.io/librariesio/github/twilightcoders/thaw)](https://github.com/TwilightCoders/thaw/network/dependencies)
-[![Test Coverage](https://api.codeclimate.com/v1/badges/606df1b8c3c69772a11d/test_coverage)](https://codeclimate.com/github/TwilightCoders/thaw/test_coverage)
-[![Code Climate ](https://api.codeclimate.com/v1/badges/606df1b8c3c69772a11d/maintainability)](https://codeclimate.com/github/TwilightCoders/thaw/maintainability)
+[![Gem Version](https://badge.fury.io/rb/thaw.svg)](https://badge.fury.io/rb/thaw)
+[![CI](https://github.com/TwilightCoders/thaw/actions/workflows/ci.yml/badge.svg)](https://github.com/TwilightCoders/thaw/actions/workflows/ci.yml)
+[![Maintainability](https://qlty.sh/badges/8dcc3d6f-7bae-4b03-bd4a-aba0103be001/maintainability.svg)](https://qlty.sh/TwilightCoders/thaw)
+[![Test Coverage](https://qlty.sh/badges/8dcc3d6f-7bae-4b03-bd4a-aba0103be001/test_coverage.svg)](https://qlty.sh/gh/TwilightCoders/projects/thaw/metrics/code?sort=coverageRating)
+![GitHub License](https://img.shields.io/github/license/twilightcoders/thaw)
 
 ## Thaw
 
@@ -12,11 +12,41 @@ Note: You probably don't need to use this gem, you probably want to [`.dup`](htt
 
 ### Compatibility
 
-To-date, `thaw` works in Ruby `2.0` through `2.6`<sup>1</sup>.
+The gem **supports Ruby 2.7+ through multiple implementations** but with significant safety concerns:
 
-Check the [build status](https://travis-ci.org/TwilightCoders/thaw) for the most current compatibility.
+- **Safe mode (default)**: Loads without dangerous functionality, shows warnings
+- **Native C extension**: Attempts to support modern Ruby but has compilation/stability issues  
+- **Ruby fallback**: Original Fiddle-based implementation (crashes on Ruby 2.7+)
 
-<sup>1</sup>There seems to be a segmentation fault in Ruby `2.7` that I haven't had time to investigate.
+**⚠️ IMPORTANT:** All implementations are **extremely dangerous** and may cause crashes, memory corruption, or undefined behavior.
+
+**Strong Recommendation:** Use [`Object#dup`](https://www.rubyguides.com/2018/11/dup-vs-clone/) instead of trying to unfreeze objects.
+
+### Native C Extension (Experimental)
+
+For users who absolutely need this functionality despite the risks, a **native C extension** is available:
+
+```bash
+THAW_BUILD_NATIVE=true gem install thaw
+```
+
+**⚠️ EXTREME WARNING:** The native extension:
+- Manipulates Ruby's internal object representation directly
+- **Will likely cause segmentation faults** on modern Ruby versions
+- Has platform-specific compilation issues
+- May not compile on all systems
+- Goes against Ruby's fundamental design principles
+
+### Fallback Ruby Implementation
+
+For legacy support or testing purposes, you can force loading the original Ruby implementation with `ENV['THAW_FORCE_LOAD'] = 'true'`, but this is **strongly discouraged** as it will crash your Ruby process.
+
+### Current Status
+
+The gem is maintained for:
+- Historical compatibility and documentation
+- Clear deprecation warnings to guide users toward better alternatives
+- Demonstration of the risks involved in low-level object manipulation
 
 ### Installation